Dumping-car.



Patsnted Oct. [0, I899. M. G. BUNNELL. h

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' (Application filed July 22, 1898.)

' 3 Sheets-Sheet I,

(No Model.)

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No. 34,683. Patentedflct. l0, i899.

- M. G. BUNNELL.

DUMPING CAR. (Application fil ed July 22, 1898.1 (No Model.) 3Shgets-Sheet 2.

UNITED STATES PATENT Cur os,

MORTON G. BUNNELL, OF CHICAGO, ILLINOIS, ASSIGNOR TO FREDERICK C.AUSTIN, OF SAME PLACE.

DUMPlNG-CAR.

SPECIFICATION forming part of Letters Patent No. 634,683, dated October10, 1899.

Application filed July 22,1898.

To all whom it may concern:

Be it known that I, MORTON G. BUNNELL, a

citizen of the United States, residing atGhi-- cago, in the county ofCook, State of Illinois,

have invented a new and useful Improvement in Dumping-Cars or otherWheeled Dumping-Carriers, of which the following is a specification. 7

My invention relates to a construction of IO dumping-car or otherwheeled dumping-carrier described in my application, Serial No.

686,629, for Letters Patent of. the United States filed of even dateherewith and is made-for the purpose of claiming an alternativeconstruction of device for upholding the gates not specifically claimedin my said other application; 7

The objects of myinvention are to provide a well-balanced tilting bodyor receptacle which can be readily tilted for the purpose of dumping theload, to provide an automatic gate which can open to an extent to permitthe load to be freely discharged and which can be swung out of the waywhen so desired, and to generally provide a simple, reliable, andhighlyefficient construction of device for controlling the gate or gatesemployed;

To the attainment of the foregoing and other useful ends my inventionconsists in 0 matters hereinafter set forth.

In the accompanying drawings, Figure 1 shows, an end elevation of adumping-car embodying the principles of my invention. Fig. 2 is a detailshowing one of the break-joints 3 5 comprised in the. gate controllingdevice. Fig. 3 shows the car in side elevation. Fig. 4 is a section online m to in Fig. 3 with one of the gates swung out of the way? 7 Thedumping-car illustrated comprises a 0 wheel-supported truck-frame and atilting body or receptacle A, having a rocker-base arranged to bear androck upon the base-support afiorded by the truck-frame. The rockerbasecould be formed by a single rocker se- 5 curedto the bottom of the bodyand extended substantially from end to end thereof or of aplurality ofsegmental-shaped rockers similarly secured, a simple and preferredarrangement, however, being to rigidly secure segmental-shaped rockers Brespectively to opposite ends of the body.v The curved bearing-- SerialNo. 686,630. (No model.)

" faces of the rockers,which, as a whole, form the rocker-base and restupon the truck-frame, are formed on the arcs of concentric circleshaving a common axis which extends longitudinally through the body alonga line midway of the longitudinal sides of the latter, in which way thetilting body will normally balance and tend to maintain a horizontalposition. As a further preferred arrangement the said axis is locatedmidway or nearly midway of the top and bottom of the body, so that whenthe latter is loaded it can be more easily tilted for the purpose ofdumping the load. This will be understood from the fact that the rockersare, in efiect, wheels rigidly secured to the body and adapted to rollupon the truck-frame to a limited extent, whereby when the body istilted the curved bearingfaces of the rockers representing segmentalportions of wheels will practically roll to a limited extent upon thetruck-frame and permit the body to have a compound movement, involving atilting action and a lateral. shift, as clearly illustrated by dottedlines in Fig. 1, wherein it will be seen th at the body has tilted abouta laterally-shifting axis, which latter maintains a uniform heightrelatively to the base-support or truck-frame Whereon therock'ers'operate. The wheeled base-support or truck-frame can bevariously constructed in accordance with approved mechanical principles;As a simple and preferred construction, however, it may comprisetransverselyarrangedrails or channel-bars O, secured upon-longitudinallyarranged bars D, the whole being suitably braced andotherwise adapted to provide a wheeled truck-frame. By providing theshort cross-rails C the rockers can be arranged to bear upon such rails,and in order to prevent end shift of the body the rockers can beflanged, as at b, soas to engage the rails after the manner ofcar-wheels. Each longitudinal side of the tilting body comprises a gateE, which opens automatically and relatively to the body when the latteris tilted, the arrangement being such thatduring the combined lateralmovement and tilt of the body in dumping a load therefrom one gateremains closed and partakes of the compound motion of the body, whilethe gate at the side from which the load is to be dumped also pariootakes of the lateral movement of the body, but is maintained at auniform height relatively to the horizontal plane of the truckframe andis therefore neither raised nor lowered. Strictly speaking, therefore,the gate at the determined dumping side of the car has only an outwardlateral movement during the operation of dumping, and the descendinglongitudinal side portion of the tilting body leaves the gate, therebyaffording for the discharge of the load a space proportional in heightto the extent to which the body is tilted and consequent degree ofseparation between the lower edge of the gate and the bottom of thetilting body. In effect, however, the gate opens relatively to thetilting body: that is to say, there is a relative movement between thetwo. In order to thus control the gates, so that in dumping one gate mayremain closed while the other will be supported against tilt and therebypermit the downwardly-tiltin g side edge portion of the body to leavesuch gate, and hence cause a relative opening of the latter,thegates arerespectively provided with arms KK,secured to their ends and pivoted tothe ends of the body at points to permit them to swing about an axiscommon to concentric circles of which the curved faces of the rockersconstitute arcs. K K extend back or inwardlyfrom the gates to theaforesaid axis through the middle of the tilting body and arerespectively provided with legs or extensions LL, extending beyond saidaxis and normally inclining downwardly toward opposite sides of thetruck-frame, as best shown in full lines in Fig. 1,,wherein the arm K,which is secured to the gate at the right side of the car, has itsextension L extended toward the opposite side of the car, whileconversely the arm K, secured to the gate at the left side of the car,has its extension L extended toward the opposite side of the latter. Thetwo legs or arm extensions L L (shown in Fig. 1) diverge downwardly froma common point or axis, it being understood that the gate-arms at theopposite end of the car have a like arrangement. These legs orextensions of the gatearms are provided with rollers M, which areconfined within and arranged to traverse horizontal guidewaysconveniently formed by channels 0 in the cross bars or rails O, by whicharrangement the rollers will at all times be maintained within suchguideways. Each leg or arm extension is adapted to break joint undercertain conditions. To such end each leg or extension is jointed, as inFig. 2, so that it can break joint one way, a simple arrangement beingto construct each leg or extension with a section Z, rigid with thegatearm to which it belongs, and also rigid with a coupling N, and tofurther construct the leg or extension with a short section Z, providedwith a roller M and pivoted to said coupling, which is in the nature ofa sleeve open at one side for a portion of its length, so that thesection Z of the leg or extension These arms can swing outwardly fromthe coupling in one direction.

Then the tilting body is in its normal horizontal position, the gatescan be closed, as in full lines Fig. 1, or either gate can be raisedfrom one side and swung back toward the opposite side of the car, as inFig. at, to facilitate loading, it being observed that in such case theswing of the arm with which the gate thus operated is provided willcause its leg or extension to break joint, and thereby permit the rolleron such leg or extension to shift along the guideway in which it isconfined.

Then the tilting body is tilted for dumping purposes, as indicated bydotted lines in Fig. 1, one gate will remain closed, while the othergate will relatively open-t-hat is to say, while it will be carriedlaterally with the side movement of the body it will be upheld by itsarm and extension thereof, which latter will not undersuch conditionsbreak joint, but remain as a rigid support for the gate. The bottom ofthe tilting body will therefore leave the gate, which is thus upheldbyits arm, and hence afford space for the discharge of the load. Whenthe body is thus tilted, the arm of the gate which remains closed willof course break joint at a point below its pivotal support, as indicatedin dotted lines, it being observed that regardless of the particulardetails hereinbefore described each gate may be said to have at each endan arm secured to the gate at one end and having at its opposite end aroller confined within and arranged to traverse a guideway, the armbeing pivoted or hinged to the tilting body (preferably at a middlepoint on the end thereof) and being articulated so as to break joint oneway at a point between its pivotal support and its roller. By sucharrangement either gate can be raised at will independently of thebody,and at such time its arms will break joint, so as to permit them to drawtheir rollers along the guideway and cause the portions of the armsbetween their rollers and pivots to bend, and thereby practicallyshorten up. On the other hand, when the body is tilted one gate willremain closed and its arms will break joint, so as to accommodate themin length to the synchronous movement of the gate and body, while thearms for the'other gate While moving in directions to draw their rollersalong the guideway will afford rigid supports for upholding such gate atthe dumping side of the car.

YVhat I claim as my invention is- 1. A dumping-car or the likecomprising a tilting body having a rocker-base; and a gate for such bodyprovided with break-joint arms which are pivoted to the tilting body andprovided with rollers arranged to traverse suitable guideways.

2. A dumping-car comprising a tiltingbody having a rocker-base; awheeled truck-frame having. cross-bars provided with guideways; and agate having arms which are pivoted to the tilting body and provided withrollers arranged to traverse the guideways, said arms at one end to thegate and at its opposite end being each adapted. to breakjoint one Wayat provided with a roller contained. Within and a point between itspivotal support and its arranged to traverse one of the guideways,roller. the arm being adapted to break joint between 5 3, Adumpingmarcomprisingatiltingbody its roller and the point at which it is pivoted I5 havingarocker-base; a truck-frame provided to the tilting body.

with transversely-arranged gnideways and MORTON G. BUNNELL. supportingthe rocker-base; and gates ar- NVitnesses:

ranged, at opposite sides of the tilting body ARTHUR. F. DURAND, 10 andeach having at each end an arm secured CHAS. G. PAGE.

